Helical Cage Rotors Switched on by Brake Molecule with Variable Fluorescence and Circularly Polarized Luminescence DOI
Weili Shang, Yuan Wang, Xuefeng Zhu

и другие.

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(50), С. 27639 - 27649

Опубликована: Дек. 6, 2023

While chiral molecular rotors have unique frames and cavities to possibly generate switchable chiroptical functions, it still remains a formidable challenge precisely restrict their rotations activate certain functions such as fluorescence well circularly polarized luminescence (CPL), which are strongly related the local rotations. Herein, we design pair of enantiopure helical cage rotors, emit light neither at state nor in crystal or aggregation states, although they contain luminophore groups. However, upon mounting with fluoroaromatic borane (TFPB) brake, phenyl rotation can be effectively hindered CPL activities switched on. Crystal structure analysis reveals that is restricted through synergistic B-O-H-N bonding fluoroaromatic-aromatic (ArF-Ar) dipole interaction. Moreover, cages on stepwise color-variable by inner brake outer supramolecular assemblies, respectively. This work not only provides idea but also unveils how could generated rotor systems.

Язык: Английский

Helical Cage Rotors Switched on by Brake Molecule with Variable Fluorescence and Circularly Polarized Luminescence DOI
Weili Shang, Yuan Wang, Xuefeng Zhu

и другие.

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(50), С. 27639 - 27649

Опубликована: Дек. 6, 2023

While chiral molecular rotors have unique frames and cavities to possibly generate switchable chiroptical functions, it still remains a formidable challenge precisely restrict their rotations activate certain functions such as fluorescence well circularly polarized luminescence (CPL), which are strongly related the local rotations. Herein, we design pair of enantiopure helical cage rotors, emit light neither at state nor in crystal or aggregation states, although they contain luminophore groups. However, upon mounting with fluoroaromatic borane (TFPB) brake, phenyl rotation can be effectively hindered CPL activities switched on. Crystal structure analysis reveals that is restricted through synergistic B-O-H-N bonding fluoroaromatic-aromatic (ArF-Ar) dipole interaction. Moreover, cages on stepwise color-variable by inner brake outer supramolecular assemblies, respectively. This work not only provides idea but also unveils how could generated rotor systems.

Язык: Английский

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